CN218335780U - Power supply circuit of biochemical analyzer - Google Patents
Power supply circuit of biochemical analyzer Download PDFInfo
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- CN218335780U CN218335780U CN202221324925.8U CN202221324925U CN218335780U CN 218335780 U CN218335780 U CN 218335780U CN 202221324925 U CN202221324925 U CN 202221324925U CN 218335780 U CN218335780 U CN 218335780U
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Abstract
The utility model discloses a biochemical analyzer power supply circuit relates to the power supply field, and this biochemical analyzer power supply circuit includes: the mains supply module is used for outputting 220V alternating current to the voltage reduction rectification filtering module; the voltage reduction rectification filtering module is used for converting 220V alternating current into direct current; the voltage input module is used for providing input voltage; the voltage output module is used for outputting voltage according to the magnitude of the input voltage; the feedback module is used for providing a feedback signal according to the magnitude of the output voltage; the voltage stabilizing and adjusting module is used for changing the input voltage according to the magnitude of the feedback signal; compared with the prior art, the beneficial effects of the utility model are that: the utility model feeds back the output voltage through the feedback module, and then adjusts the input voltage of the voltage input module through the voltage stabilization adjusting module, so that the input voltage is increased when the output voltage is reduced; when the output voltage is increased, the input voltage is reduced, and the voltage is maintained to be stable.
Description
Technical Field
The utility model relates to a power supply field specifically is a biochemical analyzer power supply circuit.
Background
The biochemical analyzer (HF) is used for detecting and analyzing vital chemical substances and provides information basis for clinical diagnosis, treatment, prognosis and health status of diseases.
The power supply circuit of the biochemical analyzer in the current market is often lack of feedback voltage signals, so that voltage fluctuation under the conditions of short circuit and the like causes working voltage mutation of the biochemical analyzer, and improvement is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a biochemical analyzer power supply circuit to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a biochemical analyzer power supply circuit, comprising:
the mains supply module is used for outputting 220V alternating current to the voltage reduction rectification filtering module;
the voltage reduction rectification filtering module is used for converting 220V alternating current into direct current;
the voltage input module is used for providing input voltage;
the voltage output module is used for outputting voltage according to the magnitude of the input voltage;
the feedback module is used for providing a feedback signal according to the magnitude of the output voltage;
the voltage stabilizing and adjusting module is used for changing the input voltage according to the magnitude of the feedback signal;
the voltage-reducing rectifying and filtering module is connected with the voltage input module and the voltage-stabilizing regulating module, the voltage input module is connected with the voltage output module, the voltage output module is connected with the feedback module, the feedback module is connected with the voltage-stabilizing regulating module, and the voltage-stabilizing regulating module is connected with the voltage input module.
As a further aspect of the present invention: the voltage input module comprises a transformer W2, a resistor R2, an MOS tube V1 and a resistor R3, the first end of the transformer W2 is connected with the resistor R2, the other end of the resistor R2 is connected with a voltage reduction rectification filter module, the second end of the transformer W2 is connected with the D pole of the MOS tube V1, the G pole of the MOS tube V1 is connected with a voltage stabilization regulating module, the S pole of the MOS tube V1 is connected with the resistor R3, and the other end of the resistor R3 is grounded.
As a further aspect of the present invention: the voltage output module comprises a transformer W2, a diode D5, a capacitor C2 and an inductor L2, the fourth end of the transformer W2 is connected with the anode of the diode D5, the cathode of the diode D5 is connected with the capacitor C2 and the inductor L2, the other end of the capacitor C2 is grounded, and the other end of the inductor L2 outputs voltage VDD.
As a further aspect of the present invention: the feedback module comprises a transformer W2, a resistor R8 and a resistor R9, the sixth end of the transformer W2 is connected with the resistor R8, the other end of the resistor R8 is connected with the resistor R9 and the voltage-stabilizing adjusting module, and the other end of the resistor R9 is grounded.
As a further aspect of the present invention: the voltage stabilizing and adjusting module comprises an integrated circuit U1, a resistor R10, a resistor R11, a capacitor C4, a capacitor C5, a capacitor C6, a resistor R5, a resistor R6, a resistor R7, a resistor R3, a resistor R4 and a capacitor C3, wherein the model of the integrated circuit U1 is UC3842, a No. 7 pin of the integrated circuit U1 is connected with the resistor R4, the other end of the resistor R4 is connected with a voltage-reducing rectifying and filtering module, a No. 2 pin of the integrated circuit U1 is connected with a feedback module, the resistor R10 and the capacitor C6, the other end of the resistor R10 is connected with the other end of the capacitor C6 and a No. 1 pin of the integrated circuit U1, a No. 8 pin of the integrated circuit U1 is connected with the capacitor C5 and the resistor R11, the other end of the capacitor C5 is grounded, the other end of the resistor R11 is connected with the capacitor C4, a No. 4 pin of the integrated circuit U1, the other end of the capacitor C4 is grounded, a No. 5 pin of the integrated circuit U1 is connected with the resistor R5, the other end of the resistor R6 is connected with the resistor R6, the other end of the MOS tube V1 is connected with the MOS tube V1, the resistor R6, the resistor R3 of the resistor R3 is connected with the MOS tube V3, the resistor R3 of the integrated circuit U1 is connected with the resistor R3, the MOS tube 7 electrode of the capacitor C3, the MOS tube of the MOS tube 7 of the integrated circuit U1, and the MOS tube.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model feeds back the output voltage through the feedback module, and then adjusts the input voltage of the voltage input module through the voltage stabilization adjusting module, so that the input voltage is increased when the output voltage is reduced; when the output voltage is increased, the input voltage is reduced, and the voltage is maintained to be stable.
Drawings
FIG. 1 is a schematic diagram of a power supply circuit for a biochemical analyzer.
FIG. 2 is a circuit diagram of a power supply circuit for a biochemical analyzer.
Fig. 3 is a pin diagram of a MOS transistor.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1, a power circuit of a biochemical analyzer includes:
the mains supply module is used for outputting 220V alternating current to the voltage reduction rectification filtering module;
the voltage reduction rectification filtering module is used for converting 220V alternating current into direct current;
the voltage input module is used for providing input voltage;
the voltage output module is used for outputting voltage according to the magnitude of the input voltage;
the feedback module is used for providing a feedback signal according to the magnitude of the output voltage;
the voltage stabilizing and adjusting module is used for changing the input voltage according to the magnitude of the feedback signal;
the voltage-stabilizing power supply system comprises a mains supply module, a voltage-reducing rectifying and filtering module, a voltage input module, a voltage-stabilizing regulating module, a feedback module, a voltage output module, a voltage stabilizing regulating module and a voltage input module.
In a specific embodiment: referring to fig. 2, the commercial power module introduces 220V ac power supplied by the live line and the zero line, the voltage-reducing rectification filter module reduces voltage through the transformer W1, the rectifier circuit formed by the diodes D1 to D4 rectifies the voltage, and the filter circuit formed by the capacitor C1, the inductor L1, and the resistor R1 performs filtering processing to obtain dc power.
In this embodiment: referring to fig. 2 and 3, the voltage input module includes a transformer W2, a resistor R2, an MOS transistor V1, and a resistor R3, the first end of the transformer W2 is connected to the resistor R2, the other end of the resistor R2 is connected to the step-down rectification filter module, the second end of the transformer W2 is connected to the D pole of the MOS transistor V1, the G pole of the MOS transistor V1 is connected to the voltage stabilization regulation module, the S pole of the MOS transistor V1 is connected to the resistor R3, and the other end of the resistor R3 is grounded.
The MOS tube V1 is an NMOS tube and is conducted when the voltage of the G pole is high level, direct current is input from the first end to the second end of the transformer W2 and is grounded through the MOS tube V1, the conduction frequency of the MOS tube V1 determines the magnitude of input voltage, and the conduction of the MOS tube V1 is controlled by a PWM signal output by the voltage stabilizing and adjusting module.
In this embodiment: referring to fig. 2, the voltage output module includes a transformer W2, a diode D5, a capacitor C2, and an inductor L2, a fourth end of the transformer W2 is connected to an anode of the diode D5, a cathode of the diode D5 is connected to the capacitor C2 and the inductor L2, another end of the capacitor C2 is grounded, and another end of the inductor L2 outputs a voltage VDD.
The first end and the second end of the transformer W2 output current from top to bottom, and the third end and the fourth end output current from bottom to top, pass through the diode D5, the capacitor C2 and the inductor L2 to output voltage VDD, and supply proper voltage for a biochemical analyzer.
In this embodiment: referring to fig. 2, the feedback module includes a transformer W2, a resistor R8, and a resistor R9, a sixth end of the transformer W2 is connected to the resistor R8, another end of the resistor R8 is connected to the resistor R9, and the voltage stabilizing and adjusting module, and another end of the resistor R9 is grounded.
The fifth end and the sixth end of the transformer W2 obtain feedback current from top to bottom according to the current flowing through the third end and the fourth end, the feedback current flows through the resistors R8 and R9, and the feedback voltage is provided on the resistor R9 and is output to the pin No. 2 of the integrated circuit U1.
In this embodiment: referring to fig. 2, the voltage regulation module includes an integrated circuit U1, a resistor R10, a resistor R11, a capacitor C4, a capacitor C5, a capacitor C6, a resistor R5, a resistor R6, a resistor R7, a resistor R3, a resistor R4, a capacitor C3, a type UC3842 of the integrated circuit U1, a pin No. 7 of the integrated circuit U1 is connected to the resistor R4, another end of the resistor R4 is connected to the buck rectification filter module, a pin No. 2 of the integrated circuit U1 is connected to the feedback module, the resistor R10, the capacitor C6, another end of the resistor R10 is connected to the other end of the capacitor C6, a pin No. 1 of the integrated circuit U1, a pin No. 8 of the integrated circuit U1 is connected to the capacitor C5, the resistor R11, another end of the capacitor C5 is grounded, another end of the resistor R11 is connected to the capacitor C4, a pin No. 4 of the integrated circuit U1, another end of the capacitor C4 is grounded, a pin No. 5 of the integrated circuit U1 is grounded, a pin No. 6 of the integrated circuit U1 is connected to the resistor R5, another end of the resistor V6 is connected to the resistor R3, another end of the MOS 7 is connected to the capacitor C3, and the capacitor C3 is connected to the ground.
The larger the feedback voltage obtained by the No. 2 pin of the integrated circuit U1 is, the larger the PWM duty ratio output by the No. 6 pin is; the smaller the feedback voltage is, the smaller the output PWM duty ratio is; the PWM signal is obtained by the oscillation of the resistance and the capacitance of the No. 4 pin; the output PWM signal is input to the G pole of the MOS tube V1 through the resistor R5, the conduction frequency of the MOS tube V1 is controlled, and then the size of the input voltage is controlled, so that when the output voltage fluctuates, the voltage is stabilized through the feedback module, the voltage stabilizing and adjusting module and the voltage input module, the fluctuation is reduced, and the power supply stability is ensured.
The utility model discloses a theory of operation is: the utility power supply module outputs 220V alternating current to supply to the voltage reduction rectifying and filtering module, the voltage reduction rectifying and filtering module converts the 220V alternating current into direct current, the voltage input module provides input voltage, the voltage output module outputs voltage according to the size of the input voltage, the feedback module provides feedback signals according to the size of the output voltage, and the voltage stabilization regulating module changes the input voltage according to the size of the feedback signals.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A power supply circuit for a biochemical analyzer, characterized in that:
this biochemical analyzer power supply circuit includes:
the mains supply module is used for outputting 220V alternating current to the voltage reduction rectification filtering module;
the voltage reduction, rectification and filtering module is used for converting 220V alternating current into direct current;
the voltage input module is used for providing input voltage;
the voltage output module is used for outputting voltage according to the magnitude of the input voltage;
the feedback module is used for providing a feedback signal according to the magnitude of the output voltage;
the voltage stabilizing and adjusting module is used for changing the input voltage according to the magnitude of the feedback signal;
the voltage-reducing rectifying and filtering module is connected with the voltage input module and the voltage-stabilizing regulating module, the voltage input module is connected with the voltage output module, the voltage output module is connected with the feedback module, the feedback module is connected with the voltage-stabilizing regulating module, and the voltage-stabilizing regulating module is connected with the voltage input module.
2. The power circuit of biochemical analyzer according to claim 1, wherein the voltage input module comprises a transformer W2, a resistor R2, a MOS transistor V1, and a resistor R3, wherein a first end of the transformer W2 is connected to the resistor R2, the other end of the resistor R2 is connected to the step-down rectifying and filtering module, a second end of the transformer W2 is connected to the D-pole of the MOS transistor V1, the G-pole of the MOS transistor V1 is connected to the voltage stabilizing and adjusting module, the S-pole of the MOS transistor V1 is connected to the resistor R3, and the other end of the resistor R3 is grounded.
3. The power circuit of biochemical analyzer according to claim 1, wherein the voltage output module includes a transformer W2, a diode D5, a capacitor C2, and an inductor L2, the fourth terminal of the transformer W2 is connected to the anode of the diode D5, the cathode of the diode D5 is connected to the capacitor C2 and the inductor L2, the other terminal of the capacitor C2 is grounded, and the other terminal of the inductor L2 outputs the voltage VDD.
4. The power circuit of biochemical analyzer according to claim 1, wherein the feedback module comprises a transformer W2, a resistor R8, and a resistor R9, the sixth terminal of the transformer W2 is connected to the resistor R8, the other terminal of the resistor R8 is connected to the resistor R9 and the voltage stabilizing and adjusting module, and the other terminal of the resistor R9 is grounded.
5. The power supply circuit of the biochemical analyzer according to claim 2, wherein the voltage regulation module includes an integrated circuit U1, a resistor R10, a resistor R11, a capacitor C4, a capacitor C5, a capacitor C6, a resistor R5, a resistor R6, a resistor R7, a resistor R3, a resistor R4, a capacitor C3, the model of the integrated circuit U1 is UC3842, pin 7 of the integrated circuit U1 is connected to the resistor R4, the other end of the resistor R4 is connected to the buck rectification and filtering module, pin 2 of the integrated circuit U1 is connected to the feedback module, resistor R10, and capacitor C6, the other end of the resistor R10 is connected to the other end of the capacitor C6, pin 1 of the integrated circuit U1, pin 8 of the integrated circuit U1 is connected to the capacitor C5, resistor R11, the other end of the capacitor C5 is grounded, the other end of the resistor R11 is connected to the capacitor C4, pin 4 of the integrated circuit U1, the other end of the capacitor C4 is grounded, the pin 5 of the integrated circuit U1 is connected to the ground, the other end of the resistor R5, the resistor R3 is connected to the resistor R3, the other end of the capacitor C3 is connected to the MOS 3, the resistor R3 is connected to the ground, the transistor of the integrated circuit U1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221324925.8U CN218335780U (en) | 2022-05-30 | 2022-05-30 | Power supply circuit of biochemical analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221324925.8U CN218335780U (en) | 2022-05-30 | 2022-05-30 | Power supply circuit of biochemical analyzer |
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| Publication Number | Publication Date |
|---|---|
| CN218335780U true CN218335780U (en) | 2023-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221324925.8U Active CN218335780U (en) | 2022-05-30 | 2022-05-30 | Power supply circuit of biochemical analyzer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116505533A (en) * | 2023-06-25 | 2023-07-28 | 国家电投集团沧州新能源发电有限公司 | New energy power supply system |
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2022
- 2022-05-30 CN CN202221324925.8U patent/CN218335780U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116505533A (en) * | 2023-06-25 | 2023-07-28 | 国家电投集团沧州新能源发电有限公司 | New energy power supply system |
| CN116505533B (en) * | 2023-06-25 | 2023-09-01 | 国家电投集团沧州新能源发电有限公司 | New energy power supply system |
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